Inkjet recording apparatus and inkjet recording method

• Main Authors: GOTOH, AKIHIKO, MOROHOSHI, NAOYA
• Format: Patent
• Language: English; French; German
• Published: 14.09.2011
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

An ink-jet recording apparatus and method for recording a high-definition image with high image rigidity and with proper printing density on various types of recording medium. The ink-jet recording apparatus has a recording controlling unit that changes the type of inks to eject by using an ink set. The ink set includes a black ink containing a self-dispersion pigment and color inks composed of at least cyan, magenta and yellow inks and containing a polymer emulsion. The polymer emulsion is such that a water-insoluble or water-slightly-soluble colorant is dispersed in a polymer particle dispersion. The type of inks is changed, considering the properties of the black ink and the color inks. In the method, a black color area in the color image is recorded by using the black ink ejecting portion and the color ink ejecting portion in combination.